Typically, if a horse does well one day and suddenly tanks the next, but didn't level up...It likely got put into a show with a bunch of horses who were about ready to level up
Lilly same here.. I think its because they level up overnight but the game doesn't explicitly tell you unless you look. and idk why they level up overnight instead of when they are trained
I've done the whole art thing. It's not really a great money pull unless you manage to land a style people like. Even then, it isn't always worth the hassle of dealing with customers.